Custom Cache of Ballerina

custom-cache.bal

public type CustomCache object {

    *AbstractCache;

    private AbstractEvictionPolicy evictionPolicy;
    private LinkedList list;

    public function __init(AbstractEvictionPolicy evictionPolicy) {
        self.evictionPolicy = evictionPolicy;
        self.list = {
            head: (),
            tail: ()
        };
    }

    public function get(string key) returns any|Error {
        // custom implementation related to retrieving the `Node`
        // from the persistence storage.
        self.evictionPolicy.get(self.list, node);
    }
}